Customizing Jasmine Global Json Diff Matchers

jasmine.js

/**
 * @file customizing jasmine global json diff matchers
 * @author Kyle He ([email protected])
 */

var path = require('path');
var jsonDiffPatch = require('jsondiffpatch');
var Jasmine = require('jasmine');

var jasmine = new Jasmine({
    projectBaseDir: path.resolve()
});

// `jasmine.addMatchers` is only allowed being called in beforeEach
// use `jasmine.Expectation.addCoreMatchers` method to add global matchers
jasmine.jasmine.Expectation.addCoreMatchers({
    toEqualJSON: function(util, customEqualityTesters) {
        // Via. https://github.com/jasmine/jasmine/issues/675#issuecomment-127187623
        return {
            compare: function(actual, expected) {
                var result = {};
                result.pass = util.equals(actual, expected, customEqualityTesters);
                result.name = 'JSON objects ' + (result.pass ? '' :  'don\'t') + ' match';
                if (result.pass) {
                    result.message = 'OMG Big Equal!';
                } else {
                    result.message = '' + jsonDiffPatch.formatters.console.format(jsonDiffPatch.diff(expected, actual));
                }
                return result;
            }
        };
    }
});

jasmine.loadConfigFile(path.resolve(__dirname, '../test/jasmine.json'));
jasmine.showColors(true);
jasmine.execute();